Quote Originally Posted by Acorn View Post
A Reset of Pasteboard or Page background changes the Rectangles to No Fill.

A 100% Transparency retains your hard-fought-for colours or graduated Fills so you can restore each as required or alter the Transparency amount...
...if you have added an ID or ClassName, you can manipulate the backgrounds further.

Acorn
Hide vs delete. I am no longer puzzled by your method